ALSA: hda: Move HD-audio core stuff into sound/hda/core

This is a part of HD-audio code restructuring.
Simply move the current code of sound/hda/* into the subdirectory
sound/hda/core, so that more stuff can be moved into sound/hda cleanly
later.

Most of file names with hdac_ and hdac_ext_ prefix are renamed without
the prefix, since they can be identified well in the directory name
and superfluous.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250709160434.1859-3-tiwai@suse.de

sound/hda/Kconfig

@@ -1,67 +1,2 @@
 # SPDX-License-Identifier: GPL-2.0-only
-config SND_HDA_CORE
-	tristate
-	select REGMAP
-
-config SND_HDA_DSP_LOADER
-	bool
-
-config SND_HDA_ALIGNED_MMIO
-	bool
-
-config SND_HDA_COMPONENT
-	bool
-
-config SND_HDA_I915
-	bool
-	select SND_HDA_COMPONENT
-
-config SND_HDA_EXT_CORE
-       tristate
-       select SND_HDA_CORE
-
-config SND_HDA_PREALLOC_SIZE
-	int "Pre-allocated buffer size for HD-audio driver"
-	range 0 32768
-	default 0 if SND_DMA_SGBUF
-	default 64 if !SND_DMA_SGBUF
-	help
-	  Specifies the default pre-allocated buffer-size in kB for the
-	  HD-audio driver.  A larger buffer (e.g. 2048) is preferred
-	  for systems using PulseAudio.  The default 64 is chosen just
-	  for compatibility reasons.
-	  On x86 systems, the default is zero as S/G allocation works
-	  and no preallocation is needed in most cases.
-
-	  Note that the pre-allocation size can be changed dynamically
-	  via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.
-
-config SND_INTEL_NHLT
-	bool
-	# this config should be selected only for Intel ACPI platforms.
-	# A fallback is provided so that the code compiles in all cases.
-
-config SND_INTEL_DSP_CONFIG
-	tristate
-	select ACPI_NHLT if ACPI
-	select SND_INTEL_NHLT if ACPI
-	select SND_INTEL_SOUNDWIRE_ACPI if ACPI
-	# this config should be selected only for Intel DSP platforms.
-	# A fallback is provided so that the code compiles in all cases.
-
-config SND_INTEL_SOUNDWIRE_ACPI
-	tristate
-
-config SND_INTEL_BYT_PREFER_SOF
-	bool "Prefer SOF driver over SST on BY/CHT platforms"
-	depends on SND_SST_ATOM_HIFI2_PLATFORM_ACPI && SND_SOC_SOF_BAYTRAIL
-	default n
-	help
-	  The kernel has 2 drivers for the Low Power Engine audio-block on
-	  Bay- and Cherry-Trail SoCs. The old SST driver and the new SOF
-	  driver. If both drivers are enabled then the kernel will default
-	  to using the old SST driver, unless told otherwise through the
-	  snd_intel_dspcfg.dsp_driver module-parameter.
-
-	  Set this option to Y to make the kernel default to the new SOF
-	  driver instead.
+source "sound/hda/core/Kconfig"

sound/hda/Makefile

@@ -1,22 +1,2 @@
 # SPDX-License-Identifier: GPL-2.0
-snd-hda-core-y := hda_bus_type.o hdac_bus.o hdac_device.o hdac_sysfs.o \
-	hdac_regmap.o hdac_controller.o hdac_stream.o array.o hdmi_chmap.o
-
-snd-hda-core-y += trace.o
-CFLAGS_trace.o := -I$(src)
-
-# for sync with i915 gfx driver
-snd-hda-core-$(CONFIG_SND_HDA_COMPONENT) += hdac_component.o
-snd-hda-core-$(CONFIG_SND_HDA_I915) += hdac_i915.o
-
-obj-$(CONFIG_SND_HDA_CORE) += snd-hda-core.o
-
-#extended hda
-obj-$(CONFIG_SND_HDA_EXT_CORE) += ext/
-
-snd-intel-dspcfg-y := intel-dsp-config.o
-snd-intel-dspcfg-$(CONFIG_SND_INTEL_NHLT) += intel-nhlt.o
-obj-$(CONFIG_SND_INTEL_DSP_CONFIG) += snd-intel-dspcfg.o
-
-snd-intel-sdw-acpi-y := intel-sdw-acpi.o
-obj-$(CONFIG_SND_INTEL_SOUNDWIRE_ACPI) += snd-intel-sdw-acpi.o
+obj-y += core/

sound/hda/core/Kconfig

@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config SND_HDA_CORE
+	tristate
+	select REGMAP
+
+config SND_HDA_DSP_LOADER
+	bool
+
+config SND_HDA_ALIGNED_MMIO
+	bool
+
+config SND_HDA_COMPONENT
+	bool
+
+config SND_HDA_I915
+	bool
+	select SND_HDA_COMPONENT
+
+config SND_HDA_EXT_CORE
+       tristate
+       select SND_HDA_CORE
+
+config SND_HDA_PREALLOC_SIZE
+	int "Pre-allocated buffer size for HD-audio driver"
+	range 0 32768
+	default 0 if SND_DMA_SGBUF
+	default 64 if !SND_DMA_SGBUF
+	help
+	  Specifies the default pre-allocated buffer-size in kB for the
+	  HD-audio driver.  A larger buffer (e.g. 2048) is preferred
+	  for systems using PulseAudio.  The default 64 is chosen just
+	  for compatibility reasons.
+	  On x86 systems, the default is zero as S/G allocation works
+	  and no preallocation is needed in most cases.
+
+	  Note that the pre-allocation size can be changed dynamically
+	  via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.
+
+config SND_INTEL_NHLT
+	bool
+	# this config should be selected only for Intel ACPI platforms.
+	# A fallback is provided so that the code compiles in all cases.
+
+config SND_INTEL_DSP_CONFIG
+	tristate
+	select ACPI_NHLT if ACPI
+	select SND_INTEL_NHLT if ACPI
+	select SND_INTEL_SOUNDWIRE_ACPI if ACPI
+	# this config should be selected only for Intel DSP platforms.
+	# A fallback is provided so that the code compiles in all cases.
+
+config SND_INTEL_SOUNDWIRE_ACPI
+	tristate
+
+config SND_INTEL_BYT_PREFER_SOF
+	bool "Prefer SOF driver over SST on BY/CHT platforms"
+	depends on SND_SST_ATOM_HIFI2_PLATFORM_ACPI && SND_SOC_SOF_BAYTRAIL
+	default n
+	help
+	  The kernel has 2 drivers for the Low Power Engine audio-block on
+	  Bay- and Cherry-Trail SoCs. The old SST driver and the new SOF
+	  driver. If both drivers are enabled then the kernel will default
+	  to using the old SST driver, unless told otherwise through the
+	  snd_intel_dspcfg.dsp_driver module-parameter.
+
+	  Set this option to Y to make the kernel default to the new SOF
+	  driver instead.

sound/hda/core/Makefile

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
+snd-hda-core-y := hda_bus_type.o bus.o device.o sysfs.o \
+	regmap.o controller.o stream.o array.o hdmi_chmap.o
+
+snd-hda-core-y += trace.o
+CFLAGS_trace.o := -I$(src)
+
+# for sync with i915 gfx driver
+snd-hda-core-$(CONFIG_SND_HDA_COMPONENT) += component.o
+snd-hda-core-$(CONFIG_SND_HDA_I915) += i915.o
+
+obj-$(CONFIG_SND_HDA_CORE) += snd-hda-core.o
+
+#extended hda
+obj-$(CONFIG_SND_HDA_EXT_CORE) += ext/
+
+snd-intel-dspcfg-y := intel-dsp-config.o
+snd-intel-dspcfg-$(CONFIG_SND_INTEL_NHLT) += intel-nhlt.o
+obj-$(CONFIG_SND_INTEL_DSP_CONFIG) += snd-intel-dspcfg.o
+
+snd-intel-sdw-acpi-y := intel-sdw-acpi.o
+obj-$(CONFIG_SND_INTEL_SOUNDWIRE_ACPI) += snd-intel-sdw-acpi.o

sound/hda/core/ext/Makefile

@@ -1,4 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-snd-hda-ext-core-y := hdac_ext_bus.o hdac_ext_controller.o hdac_ext_stream.o
+snd-hda-ext-core-y := bus.o controller.o stream.o
 
 obj-$(CONFIG_SND_HDA_EXT_CORE) += snd-hda-ext-core.o